Alexandra is scuba diving. A diving computer automatically records her depth every five minutes. The depth readings from her first 20 minutes of diving are shown in the table below. Elapsed time (in minutes) Depth (in meters) 0 0 5 –12.45 10 –9.7 15 –22.98 20 –6.6 Which best represents the greatest amount of change in her depth over a single 5-minute period? –16.38 meters –13.28 meters 13.28 meters 16.38 meters

Amir wants to proportionally increase the size of a photo to create a poster for his room. the size of the original photo is shown. complete the statement and then answer the question to represent ways that amir can increase the size of his photo.

Luke started a weight-loss program. the first week, he lost x pounds. the second week, he lost pounds less than times the pounds he lost the first week. the third week, he lost 1 pound more than of the pounds he lost the first week. liam started a weight-loss program when luke did. the first week, he lost 1 pound less than times the pounds luke lost the first week. the second week, he lost 4 pounds less than times the pounds luke lost the first week. the third week, he lost pound more than times the pounds luke lost the first week.

In a right triangle δabc, the length of leg ac = 5 ft and the hypotenuse ab = 13 ft. find: b the length of the angle bisector of angle ∠a.